A comment
Old wooden windows began to pass the cold, a fungus began to appear on them ... In a word, they decided to change the windows to more modern ones - metal-plastic ones. There wasn’t much money. Therefore, we chose from inexpensive options that have long established themselves in the market. They bought Gealan, but not those that are made in Germany it is difficult to find them, but on the territory of the Russian Federation. Of course, they were worried. After all, they could, somewhere, and cheek. Windows stand for about a year, a five-chamber profile and a 2-chamber double-glazed window proved to be good. The temperature in the room rose by 3 degrees, which, of course, pleases. The hardware is pretty sturdy. The husband was engaged in the installation. A little tormented. But, in general, the windows pleased. We think that it will be five years (their warranty period will definitely serve), and there time will tell. Do not forget that after all, not the Germans did.
pros
do not let cold, do not flow, well isolate noise.